Hoisting apparatus.



F. 1. SCHRAEDER. 1n.

HOISTING APPARATUS.

APPLICATION FILED ms. I4, 1915.

l ,256,932. Patented Feb. 19, 1918.

2 SHEETS-SHEET I.

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F. l. SC'HRAEDER, Jn.

HolsTlNG APPARATUS.I

APPLICATION FILED FEB. 14, 1914.

1,256,932. Patented Fb.19',1918.

SHEETS-SHEET 2.

W if' f' ATTORNEY FRANK J. SCHBEDER, JB., 0F 'WHEATON, ILLINOIS.

HOISTING APPARATUS.

Specication of Letters Patent.

Patented heb. t9, 1918.

To all whom t may concern.

Be it known that l, FRANK J. Sci-runners, Jr., a citizen of the UnitedStates of America, and resident of Wheaton, Dupage county, Illinois,have invented a certain new and useful Improvement in HoistingApparatus, of which the following is a specification.

This application is subordinate to my prior application Serial No.723,087, `1led September 30, 1912, in which l have claimed my inventionbroadly.

My invention relates to hoisting apparatus of the kind used, forexample, 1n transiterring coal from a storage bin to a car or boat, orto the tender of a locomotive.

An object of my invention is to provide a novel construction andarrangement for enabling the hoisting bucket to descend into the loadingpit, move toward the discharge gate of the bin, automatically receivethe load, and then move away from the bin and upward. u

further object is to provide improved means for facilitating thedischarge of the load when the bucket arrives at the proper point above.

lt is also an object to provide certain details and features ofconstruction and combinations tending to increase the general eliiciencyof a hoisting apparatus ot this particular character.

To the foregoing and other useful ends, my invention consists in mattershereinafter set forth and claimed.

In the accompanying drawings- Figure l is a side elevation of a hoistingapparatus for transferring coal from a bin or hopper to a storage binaboye, embodying the principles of my invention.

Fig. 2 is a detail lsectional view, on a larger scale, of a portion ofthe bucket, showing the same in engagement with the means by which thecontents of the bucket are automatically discharged into the chute orspout by which the coal is then conveyed to the storage hin. v

Fig. 3 is a side elevation, on a larger scale, ot the bucket in positionto receive its load from the bin or hopper, and showing the walls of thepit and bin in section.

Fig. e is a front elevation ot onehalt"A oi the bucket and tiltingsupport therefor, and the adjacent lower end portion o one citv thevertical guides ortracks, looking in the di rection indicated by thearrows 4 4 in Filg. 3. f

`ig. 5 is a view looking down on the devices shown in Fig. 4, asindicated by the arrows 5 in Fig. 3.

Fig. 6 is a detail sectional view on line 6 6 in Fig. 5.

As thus illustrated, my invention comprises a concrete bin or hopper Afor receivin the co'al from the car B. This bin has a ischarge spout awhich is normally closed by the curved gate C, which latter is rigidlysecured tothe sides of the tilting support o, this support having anaxis c1 about which it swings up and down, said axis being horizontal.rlhe gate C is curved about said axis, and is held normally closed by arope small c2 operated by a. weight o8 at the other side of the pit D inwhich the gate and its support are located. lt will be seen that thesides c'i of the support are spaced apart to receive the bucket Ebetween them, said bucket having its sides provided with wheels e forengaging the depressed tracks c5 with which the edges of the sides etare provided. rlhese wheels also move up and down in the vertical tracksor ways F. which latter are provided with lower portions f and f1 whichare deected toward the bin or hopper. Said bucket has its bottomprovided with a rigid framing ei to which is secured a cross rod e2,said rod having reduced portions es adapted to drop into the cavities ofthe bearings e4 on the support es at the bottom of the pit. 'When thebucket tilts forward upon the support c, as shown in Fi 3, theportions'ea rotate to an extent which makes it impossible for the rod e2to be raised out of the bearings e4 should any attempt be made to dothis. Vertically disposed bars G have their lower ends mounted to turnon the rod e2, ,and have their upper ends connected together by a rodarshaft g, which latter carries a sheave gi that constantly bears againstthe rope or cable H which is secured to the bucket at la, and bv whichthe bucket is raised and lowered. The upper ends of the bars 'G areprovided with wheels g2 that engage the tracks or wavs F and areneverdisengaged therefrom. Thus the sheave g1 holds the cable E in positionwhen the bucket leaves the tracks lli and tilts `t'orunird to receivethe load. The gate C is automatically opened by the weight of thebucket, and any suit- `of the retainer;

able means can be employed for limiting the downward motion of saidgate. As soon as the hoisting cable H is operated the bucket tilts backto a position where the wheels e thereof:I engage the track portion f1,and the continued operation of the cable then serves to pull the bucketupward.` y

The arrangement for discharging the load from the bucket is as followsThe said bucket has its side provided with a door l pivoted at z' at itsupper edge, and provided on its side edges with wheels 1 of any suitablecharacter. A retainer 2 is pivoted on the bottom of the bucket at 3,through 'the medium of brackets it, and adapted to bear fiatwise againstthe doorA l when the latter is closed. A s the hinge connection i3 isdisposed above the Ilower end oit the doorx l, the internal pressure ofthe coal against said door tends to keep the retainer in a verticalposition. rlhe said retainer is provided with side walls 5 having camedges that engage the wheels l on the door ogt' 'the bucket. These edgesare ot such shape, it will be seen, (see big. 2) that they hold the dooropen when the retainer i is in the position shown in F ig. 2, wherebythe coal may be discharged into the spout or chute J leading to the binl provided for the storage of the coal. The retainer 2 is automaticallybrought into this position by the cani tracks L which have open ends i''or receiving the rollers or wheels 7 on the sides ln this position therctainer z'- also serves as a discharge spout for the bucket, beinginclined downward at an angle substantially the 'same as that oi thespout or chute J, or in any suitable manner. 'When the bucket islowered, 'the cam tracks operate the retainer 2 in a direction to closethe door l, but because of the cam edges i the door closes in time toprevent interference with the upward movement of the said retainer. Whenthe walls and the retainer and 2 are in the poi sition shown in dottedlines in Fig. 2, when the door i is thus closed, the weights ia on saidwalls serve toI hold the retainer in 'the vertical position thereof. Therollers or wheels il bear against the cleats M, when the bucket is inthe pit, to keep the door of the bucket closed.

Thus it will be seen that when the bucket is raised from the' pit thegate C is automatically closed, by upward movement, to prevent thefurther discharge oic coal from the hopper. tracks very readily and withabsolute cer tainty, as the sheave g1 retains the hoisting cable inoperative position during the loading of the bucket, and the bucket andsheave then travel upward together. At a point above the load is thenautomatically discharged from the bucket in the manner deu scribed.

The bucket then 'takes thev :isi-.sepas An important consideration of myinvention is as follows :-In practice, it is desirable to have thebucket pit as small as possible, thus reducing the cost of installation.,l accomplish this result in greater measure than is possible withcertain other forms of hoisting apparatus, for the reason that thetilting bucket construction is combined with the laterally dciiectedlower end portion of the track. -The defiecting of the track toward thebin tends to reduce the depth of the pit, and the tilting of the bucketthen tends to further reduce the depth, as this makes it unnecessary forthe bucket to go deeper into the ground to get i under the dischargespout. in other words, the pit. is not as deep as would necessarily bethe case, in order to conform to practice in other respects, in anystructure without these features, or with either one of them alone.

As a matter ot further improvement, vthe bucket door l may have itslower end provided 'with a horizontal bar i that bears against theretainer to keep the pressure below the axis of the retainer. in thisway, the internal pressure of the load is exerted on the. retainer in amanner not only calculated not to open the same, but also in a wayLending to close the same. The weights 8, as stated, tend io keep theretainer closed, and this action is augmented by the internal pressure.in the manner stated.

l do not limit myseil to the exact construction shown and described.

What claim as my invention is l. A hoisting apparatus comprising :ibucket, a flexible connection for vraising and lowering said bucket,attached to the upper end thereof, a bail hinged to t e lower end ofsaid bucket, at the rear side thereof, a sheave for holding saidconnection in posi tion, mounted on the upper end ot' said bail, atrack, wheels for engaging said track, also mounted on the upper end ofsaid bail, and a support for maintaining said` bucket in loadingposition.

2. A hoisting apparatus comprising 'a bucket, a track on which saidbucket travels up and down, a connection for raising and L lowering saidbucket, means for discharging` into said bucket, a support for causingthe bucket to move toward said'means, a guide for said connection, and acarrier for said guide, having means for engaging said track, hinged atits lower end to said bucket, said support being pivoted to swing aboutalined horizontal axis, a discharge gate rigid with said support, andmeans for automaticallv lifting said support and gate when the bucket israised.

3. A hoisting apparatus comprising a track, a bucket movable up and downsaid track, a flexible connection for raising and lowering said bucket,a bail for said bucket,

saA

hinged thereto, a sheave for engaging and y holding said connection inposition, carried on the upper end of said ball, a support for holdingthe bucket in loading position, said support being pivoted to swingabout a fixedhorizontal axis, a discharge gate rigid with said support,and means for automatically lifting said support and gate when thebucket is raised.

4. A hoisting apparatus comprising a track, a bucket movable up and downsaid track, a flexible connection for raising and lowering said bucket,a sheave for engaging and holding said connection in position, anelement hinged to said bucket, connected with said sheave, and a supportfor maintaining the bucket in loading position, said support beingpivoted to swing about a fixed horlzontal axis, a discharge gate rigidwith said support, and means for automatically lifting'y said supportand gate when the bucket is raised.

5. A hoisting apparatus comprising a bucket, a iiexible connection forraising and lowering said bucket, means for directing the course of thebucket, a guide for said connection, hinged to said bucket, held to adefinite path of travel by said means, and a support for carrying thebucket into loading position, said support being pivoted to swing abouta fixed horizontal axis, a discharge gate rigid with said support, andmeans for automatically lifting said support and gate when the bucket israised. Y v

6. A hoisting apparatus comprising a bucket, a flexible connection forraising and lowering said bucket, attached to the upper end thereof, abail hinged to the lower end of said bucket, at the rear side thereof, asheave for holding said connection in position, mounted on the upper endof said bail, a track, wheels for engaging said track, also mounted onthe upper end of said bail, and a support for maintaining saidbucket inloading position, said support being pivoted to swing about a fixedhorizontal axis, a discharge gate rigid with said support, and means forautomatically lifting said support and ate when the bucket is raised.

7 A hoistmg apparatus comprising a bucket, a track on which said buckettravels up and down, a connection for raising and lowering said bucket,means for discharging into said bucket, a support for causing the bucketto move toward said means, a guide for said connection, and a carrierfor said guide, having means for engagin said track,

inged at its lower end to said ucket, said hinge having a shaft, saidsupport and bucket being movable about a common axis coincident withsaid shaft, when the bucket moves into and out of loading position, and:means upon which said support is pivoted, having bearings for receivingsaid shaft.

8. .i hoisting apparatus comprising a track, a bucket movable up anddown said track, a flexible connection for raising and lowering saidbucket, a bail for said bucket, hinged-thereto,` a sheave for engagingand holding said connection in position, carried on the upper end ofsaid bail, a support for holding the bucket in loading position, saidhinge having a shaft, said support and bucket being movable about acommon axis coincident with said shaft, When the bucket moves into andout of loading position, and means upon which said support is pivoted,having bearings for receiving said shaft.

9. A hoisting apparatus comprising a track, a bucket movable up and downsaid track, a flexible connection for raising and lowering said bucket,asheave for engaging and holding said connection in position, an elementhinged to said bucket, connected with said sheave, and a support formaintaining the bucket in loadin position, said hinge having a shaft,sai support and bucket being movable about a common axis coincident withsaid shaft, when the bucket moves into and out of loading position, andmeans upon which said support is pivoted, having bearings for receivingsaid shaft.

10. A hoisting apparatus comprising a bucket, a flexible connection forraising and lowering said bucket, means for directing the course of thebucket, a guide for said connection, hinged to said bucket, held to adefinite path of travel by said means, and a support for carrying thebucket into loading position, said hinge having'a shaft,"said supportand bucket being movable about a common axis coincident with said shaft,when the bucket' moves into and out of loading p'osition, and means uponwhich said support is pivoted, having bearings for receiving said shaft.

11. A hoisting apparatus comprising a bucket, a flexible connection forraising and lowering said bucket, attached to the upper end thereof,'abail hinged to thelower end of said bucket, at the rear side thereof, asheave for holding said connection in position, mounted on the upper endof said bail, a track, wheels for engaging said track, also mounted onthe upper end of said bail, and a support for maintaining said bucket inloading position, said hin e having a shaft, said support and bucketbemg movable about a common axis coincident with said shaft, when thebucket moves into and out of loading position, and means upon which saidsupport is pivoted, having bearings for receiving said shaft.

12. A hoisting apparatus comprising a bucket, a track on which saidbucket travels up and down, a connection for raising and lowering saidbucket, means for 'discharging into said bucket, a support for causingthe bucket to move toward said means, a guide for said connection, and acarrier for said guide, having means for engaging said track, hinged atits lower end to said bucket, said bucket having a pivoted door, meansfor holding said door in closed position, and means whereby the door isautomatically opened when the bucket reaches dumping position. f

13. A hoisting apparatus comprising a bucket, 'a flexible connection forraising and lowering said bucket, means for directing the course of thebucket, a guide for said connection, hinged to said bucket, held to adelinite path of travel by said means, and a support for carrying thebucket into loading position, said bucket having a pivoted door, meansfor holding said door in closed position, and means whereby 'the door isautomatically opened when the bucket reaches dumping position.

14. A hoisting apparatus comprising a bucket, a flexible connection forraising and. lowering said bucket, attached to the upper end thereof, abail hinged to the lower end of said bucket at the rear side thereof, a

sheave for hol in said connection in position, mounted on t e upper endof said bail,

a track, wheels for engaging said track, also mounted on the upper endof said bail,and a support for maintaining said bucket in loadingposition, said bucket having a pivoted door, means for holding said doorin closed position; and means whereby the door is automatically openedwhen the bucket reaches dumping position.

15. A hoisting apparatus comprising a track, a bucket movable up anddown there.

on, means whereby the bucket leaves the lower end of said track toassume a loading position, a flexible connection for raising andloweringl said bucket, a guide for holding said connectionin positionwhen the bucket leaves the track, connected to said bucket, movablerelative thereto, and means engaging said track, connected to said ide.

16. A hoisting apparatus ycom rising a bucket, a door pivoted on saidIbucket, a member for retaining said door in closed position, pivoted onthe bucket, an element rigid'with said retainer, means for en aging saidelement, carried by the door, whereby said door is opened when theretainer isy swung down, and devices for automatically operating saidretainer when the; bucket moves into and out of dumping posltion.

17.'.A hoisting apparatus comprising av Lacasse said door is opened whenthe retainer is swung down, and devices for automatically operating saidretainer when the bucket moves into and out of dumping position, saiddevices including a track, and means for engaging said track, carried onthe retainer. A

19. A hoisting apparatus comprising a bucket, a door pivoted on saidbucket, a member for retaining said door in closed position, pivoted onthe bucket, an element rigid with said retainer, means for engaging saidelement, Acarried by the door, whereby said door is-opened when theretainer is swung-down, and devices for automatically operating saidretainer wheny the bucket moves into and out of dumping position, saidelement liavinor a cam shaped engagin edge whereby the door does notclose unti after the retainer has moved a distance toward the bucket. vv

20. A hoisting apparatus comprising a pit, a hopper, a track having itslower portion deflected toward said hopper, disposed in said pit, abucket movable up and down o,on said track, and means for tilting thetion deiiected toward said hopper, disposed in said pit,y a bucketmovable up and down on said track, and-means for tilting the bucket intoposition to receive the discharge from said hopper, coperating with saiddelection of theitrack to reduce the depthof said pit, a gate for saidbin, and means for opening said gate by the tilting of the bucket. l

22. In a bucket elevator, the combination vof a bucket, a framework fortilting the bucket, a chute, and a ate for said chute ada ted to begradualy opened by the bucliiet as it is being tilted, said bucket `whentilted occupying a position so that the mouth thereof opens squarely tothe chute.

23. In a bucket elevator, ,the combination of a bucket, a framework fortilting kthe bucket, a chute, and a gate for said chute adapted to begradually opened by the bucket as it is being tilted, the arrangementbeing such that the opening of the ygate is produced solely by theWeight of the bucket and the gravitational tilting thereof intoV loadingposition, said bucket when tilted occupymg a position so that the mouththereof openssquarely to the chute.

FRANK J. SCHRAEDER, JR.

Witnesses:

RACHEL J. RICHARDSON, Rosi?. E. SEHNEM.

